What are the parameters of the hunt? Brush hunting or beanfield hunting? Lots of steep climbing or sneaking around? One gun or cartridge won't fit all the situations. What size deer? A 100lb Pa. mountain deer or a 280lb Alberta monster?
The .270 is a fine round, although I do not own myself. I wouldn't feel undergunned or overgunned if i did. Sort of like picking who has the best wife. They all have their pros and cons